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https://www.readbyqxmd.com/read/28098836/association-of-school-environment-and-after-school-physical-activity-with-health-related-physical-fitness-among-junior-high-school-students-in-taiwan
#1
Kai-Yang Lo, Min-Chen Wu, Shu-Chin Tung, City C Hsieh, Hsueh-Hua Yao, Chien-Chang Ho
The relationship between students' school environment and exercise habits is complex, and is affected by numerous factors. However, the few studies that have been conducted on this relationship have reported inconsistent results, especially regarding Taiwanese students. We conducted this cross-sectional study to investigate the association of school environment and after-school physical activity with health-related physical fitness in Taiwanese adolescents. Data were drawn from a national survey conducted by the Ministry of Education in Taiwan in 2008 of health-related physical fitness measurements among junior high school students (649,442 total) in grades seven to nine...
January 15, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28094373/conformational-dynamics-and-self-association-of-intrinsically-disordered-huntingtin-exon-1-in-cells
#2
Steffen Büning, Abhishek Sharma, Shivang Vachharajani, Estella Newcombe, Angelique Ormsby, Mimi Gao, David Gnutt, Tobias Vöpel, Danny M Hatters, Simon Ebbinghaus
Huntington's disease is caused by a CAG trinucleotide expansion mutation in the Huntingtin gene that leads to an artificially long polyglutamine sequence in the Huntingtin protein. A key feature of the disease is the intracellular aggregation of the Huntingtin exon 1 protein (Httex1) into micrometer sized inclusion bodies. The aggregation process of Httex1 has been extensively studied in vitro, however, the crucial early events of nucleation and aggregation in the cell remain elusive. Here, we studied the conformational dynamics and self-association of Httex1 by in-cell experiments using laser-induced temperature jumps and analytical ultracentrifugation...
January 17, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28073509/harmful-effects-of-dinophysis-to-the-ciliate-mesodinium-rubrum-implications-for-prey-capture
#3
Luiz L Mafra, Satoshi Nagai, Hajime Uchida, Camila P S Tavares, Bruno P Escobar, Toshiyuki Suzuki
Toxigenic Dinophysis spp. are obligate mixotrophic dinoflagellates that require a constant supply of prey-Mesodinium rubrum-to achieve long-term growth by means of kleptoplasty. Mesodinium rubrum is, however, a fast moving, jumping ciliate exhibiting an effective escape response from suspensivorous predators. In the present study, a series of laboratory experiments evaluating the motility and survival of M. rubrum in the presence of Dinophysis cells and/or substances contained in their culture medium was designed, in order to assess the mechanisms involved in prey capture by Dinophysis spp...
November 2016: Harmful Algae
https://www.readbyqxmd.com/read/28052052/physical-characteristics-and-performance-of-japanese-top-level-american-football-players
#4
Daichi Yamashita, Masaki Asakura, Yoshihiko Ito, Shinzo Yamada, Yosuke Yamada
This study aimed to compare the physical characteristics and performance between top-level non-professional football players in Japan and National Football League (NFL) Combine invited players and between top- and middle-level players in Japan in order to determine the factors that enhance performance in international and national competitions. One hundred sixty-eight American football players (>20 years) in Japan participated in an anthropometric (height and weight) and physical (vertical jump, long jump, 40-yard dash, pro-agility shuttle, three-cone drill, and bench press repetition test) measurement program based on the NFL Combine program to compete in the selection of candidates for the Senior World Championship...
November 5, 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28050894/patients-with-preexisting-psychiatric-disorders-admitted-to-icu-a-descriptive-and-retrospective-cohort-study
#5
Arnaud Gacouin, Adel Maamar, Pierre Fillatre, Emmanuelle Sylvestre, Margaux Dolan, Yves Le Tulzo, Jean Marc Tadié
BACKGROUND: While the psychiatric disorders are conditions frequently encountered in hospitalized patients, there are little or no data regarding the characteristics and short- and long-term outcomes in patients with preexisting psychiatric disorders in ICU. Such assessment may provide the opportunity to determine the respective impact on mortality in the ICU and after ICU discharge with reasons for admission, including modalities of self-harm, of underlying psychiatric disorders and prior psychoactive medications...
December 2017: Annals of Intensive Care
https://www.readbyqxmd.com/read/28007336/the-combined-frequency-of-igf-and-myostatin-polymorphism-among-track-field-athletes-and-swimmers
#6
Sigal Ben-Zaken, Yoav Meckel, Dan Nemet, Alon Eliakim
OBJECTIVE: The IGF C-1245T (rs35767) and the myostatin (MSTN) Lys(K)-153Arg(R) genetic polymorphism may influence skeletal muscle phenotypes and athletic performance. Carrying the minor IGF T allele and the myostatin rare R allele was associated with higher circulating IGF-I levels, greater muscle mass and improved performance. The aim of the present study was to assess the combined frequency of the IGF 1245T (rs35767) and MSTN 153Arg(R) polymorphism among Israeli track and field athletes (n=111) and swimmers (n=80)...
December 15, 2016: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/28000746/initiation-and-propagation-of-cloud-to-ground-lightning-observed-with-a-high-speed-video-camera
#7
M D Tran, V A Rakov
Complete evolution of a lightning discharge, from its initiation at an altitude of about 4 km to its ground attachment, was optically observed for the first time at the Lightning Observatory in Gainesville, Florida. The discharge developed during the late stage of a cloud flash and was initiated in a decayed branch of the latter. The initial channel section was intermittently illuminated for over 100 ms, until a bidirectionally extending channel (leader) was formed. During the bidirectional leader extension, the negative end exhibited optical and radio-frequency electromagnetic features expected for negative cloud-to-ground strokes developing in virgin air, while the positive end most of the time appeared to be inactive or showed intermittent channel luminosity enhancements...
December 21, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27990600/once-upon-a-time-dual-mobility-history
#8
Daniel Noyer, Jacques Henri Caton
INTRODUCTION: Since 1962, the low friction arthroplasty developed by Sir John Charnley has given us very good long terms results at more than 40 years follow up, but dislocation remains a major complication. The dislocation rate is a permanent risk during the life of the patient and the prosthesis, defined by J. Caton and D. Berry in 2004 as a cumulative risk. History and concept development: The concept of dual mobility was thought up by G. Bousquet, A. Rambert and J. Rieu in the 1970s (1974-1979)...
December 19, 2016: International Orthopaedics
https://www.readbyqxmd.com/read/27957824/physical-fitness-level-affects-perception-of-chronic-stress-in-military-trainees
#9
Carolin Tuch, Thomas Teubel, Roberto La Marca, Lilian Roos, Hubert Annen, Thomas Wyss
This study investigated whether physical fitness affects the perception of chronic stress in military trainees while controlling for established factors influencing stress perception. The sample consisted of 273 men (20.23 ± 1.12 years, 73.56 ± 10.52 kg, 1.78 ± 0.06 m). Physical fitness was measured by progressive endurance run (maximum oxygen uptake; VO2 max), standing long jump, seated shot put, trunk muscle strength, and one leg standing test. Perceived stress was measured using the Perceived Stress Questionnaire in Weeks 1 and 11 of basic military training (BMT)...
December 13, 2016: Stress and Health: Journal of the International Society for the Investigation of Stress
https://www.readbyqxmd.com/read/27943134/cooling-dynamics-a-new-predictor-of-long-term-efficacy-of-atrioventricular-nodal-reentrant-tachycardia-cryoablation
#10
Mario Matta, Matteo Anselmino, Marco Scaglione, Marco Vitolo, Federico Ferraris, Paolo Di Donna, Domenico Caponi, Davide Castagno, Fiorenzo Gaita
PURPOSE: Catheter ablation of the slow pathway is the most effective treatment for atrioventricular nodal reentrant tachycardia (AVNRT). Cryoenergy, compared to radiofrequency, relates to lower heart block risk but higher incidence of AVNRT recurrences. The aims of this study are to confirm the safety and efficacy of AVNRT cryoablation and to identify predictors of long-term recurrences. METHODS: Among 241 patients undergoing AVNRT cryoablation, 239 (99.2%) experienced acute effective cryoablation of the slow pathway, and no procedure-related complications were reported...
December 10, 2016: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/27941163/effects-of-accumulating-work-shifts-on-performance-based-fatigue-using-multiple-strength-measurements-in-day-and-night-shift-nurses-and-aides
#11
Brennan J Thompson, Matt S Stock, Victoria K Banuelas
OBJECTIVE: This study aimed to examine the effects of accumulating nursing work on maximal and rapid strength characteristics in female nurses and compare these effects in day versus night shift workers. BACKGROUND: Nurses exhibit among the highest nonfatal injury rates of all occupations, which may be a consequence of long, cumulative work shift schedules. Fatigue may accumulate across multiple shifts and lead to performance impairments, which in turn may be linked to injury risks...
December 9, 2016: Human Factors
https://www.readbyqxmd.com/read/27940404/got-bacteria-the-astounding-yet-not-so-surprising-microbiome-of-human-milk
#12
REVIEW
Michelle K McGuire, Mark A McGuire
Contrary to long-held dogma, human milk is not sterile. Instead, it provides infants a rich source of diverse bacteria, particularly microbes belonging to the Staphylococcus, Streptococcus, and Pseudomonas genera. Very little is known about factors that influence variation in the milk microbiome among women and populations, although time postpartum, delivery mode, and maternal factors such as diet and antibiotic use might be important. The origins of the bacteria in milk are thought to include the maternal gastrointestinal tract (via an entero-mammary pathway) and through bacterial exposure of the breast during nursing...
December 8, 2016: Current Opinion in Biotechnology
https://www.readbyqxmd.com/read/27904797/preseason-jump-and-hop-measures-in-male-collegiate-basketball-players-an-epidemiologic-report
#13
Jason Brumitt, Amy Engilis, Dale Isaak, Amy Briggs, Alma Mattocks
BACKGROUND: Injuries are inherent in basketball with lower extremity (LE) injury rates reported as high as 11.6 per 1000 athletic exposures (AEs); many of these injuries result in time loss from sport participation. A recent trend in sports medicine research has been the attempt to identify athletes who may be at risk for injury based on measures of preseason fitness. HYPOTHESIS/PURPOSE: The purpose of this prospective cohort study was to determine if the standing long jump (SLJ) and/or the single-leg hop (SLH) for distance functional performance tests (FPT) are associated with non-contact time loss lower quadrant (LQ, defined as lower extremities or low back) injury in collegiate male basketball players...
December 2016: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/27898872/the-effect-of-oxidative-stress-during-exercise-in-the-horse
#14
C A Williams
Oxidative stress is an imbalance of the oxidant-to-antioxidant ratio in the body. Increases in oxidative stress and changes in antioxidant status have been shown during endurance and intense exercise and eventing competition in horses. Antioxidants include vitamins, minerals, enzymes, and proteins that must be synthesized in the body or obtained from the diet. Therefore, exercise level and diet are both factors that play a role in influencing the oxidative stress and antioxidant status of the equine athlete...
October 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27882600/muscular-fitness-and-metabolic-and-inflammatory-biomarkers-in-adolescents-results-from-labmed-physical-activity-study
#15
C A Agostinis-Sobrinho, C Moreira, S Abreu, L Lopes, L B Sardinha, J Oliveira-Santos, A Oliveira, J Mota, R Santos
This study aimed to evaluate the associations between muscular fitness and inflammatory biomarkers and to investigate the relationship between muscular fitness and selected clustered inflammatory biomarkers in adolescents. This is a cross-sectional analysis with 529 adolescents (267 girls) aged 12-18 years. Handgrip strength and standing long jump tests assessed MF. Continuous scores of clustered inflammatory biomarkers (sum of Z-scores of C-reactive protein [CRP], C3, C4, fibrinogen, and leptin); metabolic risk factor (MRF) score (sum of Z-scores of SBP, triglycerides, ratio total cholesterol [TC]/HDL, HOMA-IR, and waist circumference [WC]) were computed...
November 23, 2016: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/27876855/navigation-by-anomalous-random-walks-on-complex-networks
#16
Tongfeng Weng, Jie Zhang, Moein Khajehnejad, Michael Small, Rui Zheng, Pan Hui
Anomalous random walks having long-range jumps are a critical branch of dynamical processes on networks, which can model a number of search and transport processes. However, traditional measurements based on mean first passage time are not useful as they fail to characterize the cost associated with each jump. Here we introduce a new concept of mean first traverse distance (MFTD) to characterize anomalous random walks that represents the expected traverse distance taken by walkers searching from source node to target node, and we provide a procedure for calculating the MFTD between two nodes...
November 23, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27870694/does-intrasession-concurrent-strength-and-aerobic-training-order-influence-training-induced-explosive-strength-and-v-combining-dot-above-o2max-in-prepubescent-children
#17
RANDOMIZED CONTROLLED TRIAL
Ana R Alves, Carlos C Marta, Henrique P Neiva, Mikel Izquierdo, Mário C Marques
Alves, AR, Marta, C, Neiva, HP, Izquierdo, M, and Marques, MC. Does intrasession concurrent strength and aerobic training order influence training-induced explosive strength and V[Combining Dot Above]O2max in prepubescent children?. J Strength Cond Res 30(12): 3267-3277, 2016-The aim of this study was to analyze the interference of strength and aerobic training order over an 8-week period on explosive skills and maximal oxygen uptake (V[Combining Dot Above]O2max) in prepubescent children. One hundred twenty-eight prepubescent children aged 10-11 years (10...
December 2016: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/27856901/improving-photosynthesis-and-crop-productivity-by-accelerating-recovery-from-photoprotection
#18
Johannes Kromdijk, Katarzyna Głowacka, Lauriebeth Leonelli, Stéphane T Gabilly, Masakazu Iwai, Krishna K Niyogi, Stephen P Long
Crop leaves in full sunlight dissipate damaging excess absorbed light energy as heat. When sunlit leaves are shaded by clouds or other leaves, this protective dissipation continues for many minutes and reduces photosynthesis. Calculations have shown that this could cost field crops up to 20% of their potential yield. Here, we describe the bioengineering of an accelerated response to natural shading events in Nicotiana (tobacco), resulting in increased leaf carbon dioxide uptake and plant dry matter productivity by about 15% in fluctuating light...
November 18, 2016: Science
https://www.readbyqxmd.com/read/27837043/reliability-of-sargent-jump-test-in-4-to-5-year-old-children
#19
Carlos AyánPérez, José M CancelaCarral, Joaquín Lago-Ballesteros, Iván Martínez-Lemos
We assessed the test-retest reliability of the Sargent jump (VJ) for vertical jumping performed by 4 and 5 years old pre-schoolers. The VJ was administered three times (familiarization, test, and retest) to 163 children (mean age: 4.48 ± 0.5 years; 55.8% girls). The results were compared with those obtained in the standing long jump (SLJ) and in the 25 -m dash test to identify how its performance correlated with other measures of leg power. Systematic change in the mean and retest correlations with these other measures were used to help analyze VJ test-retest reliability...
November 11, 2016: Perceptual and Motor Skills
https://www.readbyqxmd.com/read/27826498/functional-diversity-of-resilin-in-arthropoda
#20
REVIEW
Jan Michels, Esther Appel, Stanislav N Gorb
Resilin is an elastomeric protein typically occurring in exoskeletons of arthropods. It is composed of randomly orientated coiled polypeptide chains that are covalently cross-linked together at regular intervals by the two unusual amino acids dityrosine and trityrosine forming a stable network with a high degree of flexibility and mobility. As a result of its molecular prerequisites, resilin features exceptional rubber-like properties including a relatively low stiffness, a rather pronounced long-range deformability and a nearly perfect elastic recovery...
2016: Beilstein Journal of Nanotechnology
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